<!DOCTYPE html>
<!-- saved from url=(0047)http://202.116.46.252/module/detail/2/problem/1 -->
<html lang=""><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><style type="text/css">
.anticon {
  display: inline-block;
  color: inherit;
  font-style: normal;
  line-height: 0;
  text-align: center;
  text-transform: none;
  vertical-align: -0.125em;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.anticon > * {
  line-height: 1;
}

.anticon svg {
  display: inline-block;
}

.anticon::before {
  display: none;
}

.anticon .anticon-icon {
  display: block;
}

.anticon[tabindex] {
  cursor: pointer;
}

.anticon-spin::before,
.anticon-spin {
  display: inline-block;
  -webkit-animation: loadingCircle 1s infinite linear;
  animation: loadingCircle 1s infinite linear;
}

@-webkit-keyframes loadingCircle {
  100% {
    -webkit-transform: rotate(360deg);
    transform: rotate(360deg);
  }
}

@keyframes loadingCircle {
  100% {
    -webkit-transform: rotate(360deg);
    transform: rotate(360deg);
  }
}
</style><meta http-equiv="X-UA-Compatible" content="IE=edge"><meta name="viewport" content="width=device-width,initial-scale=1"><link rel="icon" href="./SQL OJ_files/scnu.png"><title>SQL OJ</title><link href="./SQL OJ_files/app.cfba5f2d.css" rel="preload" as="style"><link href="./SQL OJ_files/chunk-vendors.249325d5.css" rel="preload" as="style"><link href="./SQL OJ_files/app.58329bf9.js.下载" rel="preload" as="script"><link href="./SQL OJ_files/chunk-vendors.8aa44ccb.js.下载" rel="preload" as="script"><link href="./SQL OJ_files/chunk-vendors.249325d5.css" rel="stylesheet"><link href="./SQL OJ_files/app.cfba5f2d.css" rel="stylesheet"><style>.w-e-toolbar,
.w-e-text-container,
.w-e-menu-panel {
  padding: 0;
  margin: 0;
  box-sizing: border-box;
  background-color: #fff;
  /*表情菜单样式*/
  /*分割线样式*/
}
.w-e-toolbar h1,
.w-e-text-container h1,
.w-e-menu-panel h1 {
  font-size: 32px !important;
}
.w-e-toolbar h2,
.w-e-text-container h2,
.w-e-menu-panel h2 {
  font-size: 24px !important;
}
.w-e-toolbar h3,
.w-e-text-container h3,
.w-e-menu-panel h3 {
  font-size: 18.72px !important;
}
.w-e-toolbar h4,
.w-e-text-container h4,
.w-e-menu-panel h4 {
  font-size: 16px !important;
}
.w-e-toolbar h5,
.w-e-text-container h5,
.w-e-menu-panel h5 {
  font-size: 13.28px !important;
}
.w-e-toolbar p,
.w-e-text-container p,
.w-e-menu-panel p {
  font-size: 16px !important;
}
.w-e-toolbar .eleImg,
.w-e-text-container .eleImg,
.w-e-menu-panel .eleImg {
  cursor: pointer;
  display: inline-block;
  font-size: 18px;
  padding: 0 3px;
}
.w-e-toolbar *,
.w-e-text-container *,
.w-e-menu-panel * {
  padding: 0;
  margin: 0;
  box-sizing: border-box;
}
.w-e-toolbar hr,
.w-e-text-container hr,
.w-e-menu-panel hr {
  cursor: pointer;
  display: block;
  height: 0px;
  border: 0;
  border-top: 3px solid #ccc;
  margin: 20px 0;
}
.w-e-clear-fix:after {
  content: "";
  display: table;
  clear: both;
}
.w-e-drop-list-item {
  position: relative;
  top: 1px;
  padding-right: 7px;
  color: #333 !important;
}
.w-e-drop-list-tl {
  padding-left: 10px;
  text-align: left;
}
</style><style>@font-face {
  font-family: 'w-e-icon';
  src: url(data:font/woff;base64,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) format('truetype');
  font-weight: normal;
  font-style: normal;
}
[class^="w-e-icon-"],
[class*=" w-e-icon-"] {
  /* use !important to prevent issues with browser extensions that change fonts */
  font-family: 'w-e-icon' !important;
  speak: none;
  font-style: normal;
  font-weight: normal;
  font-variant: normal;
  text-transform: none;
  line-height: 1;
  /* Better Font Rendering =========== */
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
.w-e-icon-close:before {
  content: "\f00d";
}
.w-e-icon-upload2:before {
  content: "\e9c6";
}
.w-e-icon-trash-o:before {
  content: "\f014";
}
.w-e-icon-header:before {
  content: "\f1dc";
}
.w-e-icon-pencil2:before {
  content: "\e906";
}
.w-e-icon-paint-brush:before {
  content: "\f1fc";
}
.w-e-icon-image:before {
  content: "\e90d";
}
.w-e-icon-play:before {
  content: "\e912";
}
.w-e-icon-location:before {
  content: "\e947";
}
.w-e-icon-undo:before {
  content: "\e965";
}
.w-e-icon-redo:before {
  content: "\e966";
}
.w-e-icon-quotes-left:before {
  content: "\e977";
}
.w-e-icon-list-numbered:before {
  content: "\e9b9";
}
.w-e-icon-list2:before {
  content: "\e9bb";
}
.w-e-icon-link:before {
  content: "\e9cb";
}
.w-e-icon-happy:before {
  content: "\e9df";
}
.w-e-icon-bold:before {
  content: "\ea62";
}
.w-e-icon-underline:before {
  content: "\ea63";
}
.w-e-icon-italic:before {
  content: "\ea64";
}
.w-e-icon-strikethrough:before {
  content: "\ea65";
}
.w-e-icon-table2:before {
  content: "\ea71";
}
.w-e-icon-paragraph-left:before {
  content: "\ea77";
}
.w-e-icon-paragraph-center:before {
  content: "\ea78";
}
.w-e-icon-paragraph-right:before {
  content: "\ea79";
}
.w-e-icon-paragraph-justify:before {
  content: "\ea7a";
}
.w-e-icon-terminal:before {
  content: "\f120";
}
.w-e-icon-page-break:before {
  content: "\ea68";
}
.w-e-icon-cancel-circle:before {
  content: "\ea0d";
}
.w-e-icon-font:before {
  content: "\ea5c";
}
.w-e-icon-text-heigh:before {
  content: "\ea5f";
}
.w-e-icon-paint-format:before {
  content: "\e90c";
}
.w-e-icon-indent-increase:before {
  content: "\ea7b";
}
.w-e-icon-indent-decrease:before {
  content: "\ea7c";
}
.w-e-icon-row-height:before {
  content: "\e9be";
}
.w-e-icon-fullscreen_exit:before {
  content: "\e900";
}
.w-e-icon-fullscreen:before {
  content: "\e901";
}
.w-e-icon-split-line:before {
  content: "\ea0b";
}
.w-e-icon-checkbox-checked:before {
  content: "\ea52";
}
</style><style>.w-e-toolbar {
  display: flex;
  padding: 0 6px;
  flex-wrap: wrap;
  position: relative;
  /* 单个菜单 */
}
.w-e-toolbar .w-e-menu {
  position: relative;
  display: flex;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  text-align: center;
  cursor: pointer;
}
.w-e-toolbar .w-e-menu i {
  color: #999;
}
.w-e-toolbar .w-e-menu:hover {
  background-color: #F6F6F6;
}
.w-e-toolbar .w-e-menu:hover i {
  color: #333;
}
.w-e-toolbar .w-e-active i {
  color: #1e88e5;
}
.w-e-toolbar .w-e-active:hover i {
  color: #1e88e5;
}
.w-e-menu-tooltip {
  position: absolute;
  display: flex;
  color: #f1f1f1;
  background-color: rgba(0, 0, 0, 0.75);
  box-shadow: 0 2px 8px 0 rgba(0, 0, 0, 0.15);
  border-radius: 4px;
  padding: 4px 5px 6px;
  justify-content: center;
  align-items: center;
}
.w-e-menu-tooltip-up::after {
  content: "";
  position: absolute;
  top: 100%;
  left: 50%;
  margin-left: -5px;
  border: 5px solid rgba(0, 0, 0, 0);
  border-top-color: rgba(0, 0, 0, 0.73);
}
.w-e-menu-tooltip-down::after {
  content: "";
  position: absolute;
  bottom: 100%;
  left: 50%;
  margin-left: -5px;
  border: 5px solid rgba(0, 0, 0, 0);
  border-bottom-color: rgba(0, 0, 0, 0.73);
}
.w-e-menu-tooltip-item-wrapper {
  font-size: 14px;
  margin: 0 5px;
}
</style><style>.w-e-text-container {
  position: relative;
  height: 100%;
}
.w-e-text-container .w-e-progress {
  position: absolute;
  background-color: #1e88e5;
  top: 0;
  left: 0;
  height: 1px;
}
.w-e-text-container .placeholder {
  color: #D4D4D4;
  position: absolute;
  font-size: 11pt;
  line-height: 22px;
  left: 10px;
  top: 10px;
  -webkit-user-select: none;
     -moz-user-select: none;
      -ms-user-select: none;
          user-select: none;
  z-index: -1;
}
.w-e-text {
  padding: 0 10px;
  overflow-y: auto;
}
.w-e-text p,
.w-e-text h1,
.w-e-text h2,
.w-e-text h3,
.w-e-text h4,
.w-e-text h5,
.w-e-text table,
.w-e-text pre {
  margin: 10px 0;
  line-height: 1.5;
}
.w-e-text ul,
.w-e-text ol {
  margin: 10px 0 10px 20px;
}
.w-e-text blockquote {
  display: block;
  border-left: 8px solid #d0e5f2;
  padding: 5px 10px;
  margin: 10px 0;
  line-height: 1.4;
  font-size: 100%;
  background-color: #f1f1f1;
}
.w-e-text code {
  display: inline-block;
  background-color: #f1f1f1;
  border-radius: 3px;
  padding: 3px 5px;
  margin: 0 3px;
}
.w-e-text pre code {
  display: block;
}
.w-e-text table {
  border-top: 1px solid #ccc;
  border-left: 1px solid #ccc;
}
.w-e-text table td,
.w-e-text table th {
  border-bottom: 1px solid #ccc;
  border-right: 1px solid #ccc;
  padding: 3px 5px;
  min-height: 30px;
  height: 30px;
}
.w-e-text table th {
  border-bottom: 2px solid #ccc;
  text-align: center;
  background-color: #f1f1f1;
}
.w-e-text:focus {
  outline: none;
}
.w-e-text img {
  cursor: pointer;
}
.w-e-text img:hover {
  box-shadow: 0 0 5px #333;
}
.w-e-text .w-e-todo {
  margin: 0 0 0 20px;
}
.w-e-text .w-e-todo li {
  list-style: none;
  font-size: 1em;
}
.w-e-text .w-e-todo li span:nth-child(1) {
  position: relative;
  left: -18px;
}
.w-e-text .w-e-todo li span:nth-child(1) input {
  position: absolute;
  margin-right: 3px;
}
.w-e-text .w-e-todo li span:nth-child(1) input[type=checkbox] {
  top: 50%;
  margin-top: -6px;
}
.w-e-tooltip {
  position: absolute;
  display: flex;
  color: #f1f1f1;
  background-color: rgba(0, 0, 0, 0.75);
  box-shadow: 0 2px 8px 0 rgba(0, 0, 0, 0.15);
  border-radius: 4px;
  padding: 4px 5px 6px;
  justify-content: center;
  align-items: center;
}
.w-e-tooltip-up::after {
  content: "";
  position: absolute;
  top: 100%;
  left: 50%;
  margin-left: -5px;
  border: 5px solid rgba(0, 0, 0, 0);
  border-top-color: rgba(0, 0, 0, 0.73);
}
.w-e-tooltip-down::after {
  content: "";
  position: absolute;
  bottom: 100%;
  left: 50%;
  margin-left: -5px;
  border: 5px solid rgba(0, 0, 0, 0);
  border-bottom-color: rgba(0, 0, 0, 0.73);
}
.w-e-tooltip-item-wrapper {
  cursor: pointer;
  font-size: 14px;
  margin: 0 5px;
}
.w-e-tooltip-item-wrapper:hover {
  color: #ccc;
  text-decoration: underline;
}
</style><style>.w-e-menu .w-e-panel-container {
  position: absolute;
  top: 0;
  left: 50%;
  border: 1px solid #ccc;
  border-top: 0;
  box-shadow: 1px 1px 2px #ccc;
  color: #333;
  background-color: #fff;
  text-align: left;
  /* 为 emotion panel 定制的样式 */
  /* 上传图片、上传视频的 panel 定制样式 */
}
.w-e-menu .w-e-panel-container .w-e-panel-close {
  position: absolute;
  right: 0;
  top: 0;
  padding: 5px;
  margin: 2px 5px 0 0;
  cursor: pointer;
  color: #999;
}
.w-e-menu .w-e-panel-container .w-e-panel-close:hover {
  color: #333;
}
.w-e-menu .w-e-panel-container .w-e-panel-tab-title {
  list-style: none;
  display: flex;
  font-size: 14px;
  margin: 2px 10px 0 10px;
  border-bottom: 1px solid #f1f1f1;
}
.w-e-menu .w-e-panel-container .w-e-panel-tab-title .w-e-item {
  padding: 3px 5px;
  color: #999;
  cursor: pointer;
  margin: 0 3px;
  position: relative;
  top: 1px;
}
.w-e-menu .w-e-panel-container .w-e-panel-tab-title .w-e-active {
  color: #333;
  border-bottom: 1px solid #333;
  cursor: default;
  font-weight: 700;
}
.w-e-menu .w-e-panel-container .w-e-panel-tab-content {
  padding: 10px 15px 10px 15px;
  font-size: 16px;
  /* 输入框的样式 */
  /* 按钮的样式 */
}
.w-e-menu .w-e-panel-container .w-e-panel-tab-content input:focus,
.w-e-menu .w-e-panel-container .w-e-panel-tab-content textarea:focus,
.w-e-menu .w-e-panel-container .w-e-panel-tab-content button:focus {
  outline: none;
}
.w-e-menu .w-e-panel-container .w-e-panel-tab-content textarea {
  width: 100%;
  border: 1px solid #ccc;
  padding: 5px;
  margin-top: 10px;
}
.w-e-menu .w-e-panel-container .w-e-panel-tab-content textarea:focus {
  border-color: #1e88e5;
}
.w-e-menu .w-e-panel-container .w-e-panel-tab-content input[type=text] {
  border: none;
  border-bottom: 1px solid #ccc;
  font-size: 14px;
  height: 20px;
  color: #333;
  text-align: left;
}
.w-e-menu .w-e-panel-container .w-e-panel-tab-content input[type=text].small {
  width: 30px;
  text-align: center;
}
.w-e-menu .w-e-panel-container .w-e-panel-tab-content input[type=text].block {
  display: block;
  width: 100%;
  margin: 10px 0;
}
.w-e-menu .w-e-panel-container .w-e-panel-tab-content input[type=text]:focus {
  border-bottom: 2px solid #1e88e5;
}
.w-e-menu .w-e-panel-container .w-e-panel-tab-content .w-e-button-container button {
  font-size: 14px;
  color: #1e88e5;
  border: none;
  padding: 5px 10px;
  background-color: #fff;
  cursor: pointer;
  border-radius: 3px;
}
.w-e-menu .w-e-panel-container .w-e-panel-tab-content .w-e-button-container button.left {
  float: left;
  margin-right: 10px;
}
.w-e-menu .w-e-panel-container .w-e-panel-tab-content .w-e-button-container button.right {
  float: right;
  margin-left: 10px;
}
.w-e-menu .w-e-panel-container .w-e-panel-tab-content .w-e-button-container button.gray {
  color: #999;
}
.w-e-menu .w-e-panel-container .w-e-panel-tab-content .w-e-button-container button.red {
  color: #c24f4a;
}
.w-e-menu .w-e-panel-container .w-e-panel-tab-content .w-e-button-container button:hover {
  background-color: #f1f1f1;
}
.w-e-menu .w-e-panel-container .w-e-panel-tab-content .w-e-button-container:after {
  content: "";
  display: table;
  clear: both;
}
.w-e-menu .w-e-panel-container .w-e-emoticon-container .w-e-item {
  cursor: pointer;
  font-size: 18px;
  padding: 0 3px;
  display: inline-block;
}
.w-e-menu .w-e-panel-container .w-e-up-img-container,
.w-e-menu .w-e-panel-container .w-e-up-video-container {
  text-align: center;
}
.w-e-menu .w-e-panel-container .w-e-up-img-container .w-e-up-btn,
.w-e-menu .w-e-panel-container .w-e-up-video-container .w-e-up-btn {
  display: inline-block;
  color: #999;
  cursor: pointer;
  font-size: 60px;
  line-height: 1;
}
.w-e-menu .w-e-panel-container .w-e-up-img-container .w-e-up-btn:hover,
.w-e-menu .w-e-panel-container .w-e-up-video-container .w-e-up-btn:hover {
  color: #333;
}
</style><style>.w-e-toolbar .w-e-droplist {
  position: absolute;
  left: 0;
  top: 0;
  background-color: #fff;
  border: 1px solid #f1f1f1;
  border-right-color: #ccc;
  border-bottom-color: #ccc;
}
.w-e-toolbar .w-e-droplist .w-e-dp-title {
  text-align: center;
  color: #999;
  line-height: 2;
  border-bottom: 1px solid #f1f1f1;
  font-size: 13px;
}
.w-e-toolbar .w-e-droplist ul.w-e-list {
  list-style: none;
  line-height: 1;
}
.w-e-toolbar .w-e-droplist ul.w-e-list li.w-e-item {
  color: #333;
  padding: 5px 0;
}
.w-e-toolbar .w-e-droplist ul.w-e-list li.w-e-item:hover {
  background-color: #f1f1f1;
}
.w-e-toolbar .w-e-droplist ul.w-e-block {
  list-style: none;
  text-align: left;
  padding: 5px;
}
.w-e-toolbar .w-e-droplist ul.w-e-block li.w-e-item {
  display: inline-block;
  padding: 3px 5px;
}
.w-e-toolbar .w-e-droplist ul.w-e-block li.w-e-item:hover {
  background-color: #f1f1f1;
}
</style><style>.w-e-text-container {
  overflow: hidden;
}
.w-e-img-drag-mask {
  position: absolute;
  z-index: 1;
  border: 1px dashed #ccc;
  box-sizing: border-box;
}
.w-e-img-drag-mask .w-e-img-drag-rb {
  position: absolute;
  right: -5px;
  bottom: -5px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #ccc;
  cursor: se-resize;
}
.w-e-img-drag-mask .w-e-img-drag-show-size {
  min-width: 110px;
  height: 22px;
  line-height: 22px;
  font-size: 14px;
  color: #999;
  position: absolute;
  left: 0;
  top: 0;
  background-color: #999;
  color: #fff;
  border-radius: 2px;
  padding: 0 5px;
}
</style><style>.w-e-table {
  display: flex;
}
.w-e-table .w-e-table-input {
  width: 40px;
  text-align: center!important;
  margin: 0 5px;
}
</style><style>.w-e-full-screen-editor {
  position: fixed;
  width: 100%!important;
  height: 100%!important;
  left: 0;
  top: 0;
}
</style><style>.w-e-content-mantle {
  width: 100%;
  height: 100%;
  overflow-y: auto;
}
.w-e-content-mantle .w-e-content-preview {
  width: 100%;
  min-height: 100%;
  padding: 0 10px;
  line-height: 1.5;
}
.w-e-content-mantle .w-e-content-preview img {
  cursor: default;
}
.w-e-content-mantle .w-e-content-preview img:hover {
  box-shadow: none;
}
.w-e-menue-mantle {
  position: absolute;
  height: 100%;
  width: 100%;
  top: 0;
  left: 0;
}
</style></head><body><noscript><strong>We're sorry but SQL OJ doesn't work properly without JavaScript enabled. Please enable it to continue.</strong></noscript><div id="app" data-v-app=""><section class="ant-layout layout" id="components-layout-demo-top"><header class="ant-layout-header" style="padding: 0px 24px;"><div class="ant-row ant-row-no-wrap" style="row-gap: 0px;"><div class="ant-col"><div class="logo"><img src="./SQL OJ_files/scnu.png">SQL OJ</div></div><div class="ant-col" style="flex: 5 5 auto;"><ul class="ant-menu-overflow ant-menu ant-menu-root ant-menu-horizontal ant-menu-dark" role="menu" data-menu-list="true" overflowedindicator="&#39;&lt;template&gt;&lt;span&gt;..&lt;/span&gt;&lt;/template&gt;&#39;" style="line-height: 64px;"><!----><li class="ant-menu-overflow-item ant-menu-item ant-menu-item-only-child" role="menuitem" tabindex="-1" data-menu-id="/" aria-disabled="false" style="opacity: 1; order: 0;"><!----><span class="ant-menu-title-content"><a href="http://202.116.46.252/" class="">Home</a></span></li><!----><li class="ant-menu-overflow-item ant-menu-item ant-menu-item-only-child" role="menuitem" tabindex="-1" data-menu-id="/problemSet" aria-disabled="false" style="opacity: 1; order: 1;"><!----><span class="ant-menu-title-content"><a href="http://202.116.46.252/problemSet/1" class="">Problem Set</a></span></li><!----><li class="ant-menu-overflow-item ant-menu-item ant-menu-item-selected ant-menu-item-only-child" role="menuitem" tabindex="-1" data-menu-id="/module" aria-disabled="false" style="opacity: 1; order: 2;"><!----><span class="ant-menu-title-content"><a href="http://202.116.46.252/module/1" class="">Module</a></span></li><!----><li class="ant-menu-overflow-item ant-menu-item ant-menu-item-only-child" role="menuitem" tabindex="-1" data-menu-id="/submission" aria-disabled="false" style="opacity: 1; order: 3;"><!----><span class="ant-menu-title-content"><a href="http://202.116.46.252/submission/1" class="">Submission</a></span></li><!----><li class="ant-menu-overflow-item ant-menu-item ant-menu-item-only-child" role="menuitem" tabindex="-1" data-menu-id="/faq" aria-disabled="false" style="opacity: 1; order: 4;"><!----><span class="ant-menu-title-content"><a href="http://202.116.46.252/faq" class="">FAQ</a></span></li><li class="ant-menu-overflow-item ant-menu-overflow-item-rest ant-menu-submenu ant-menu-submenu-horizontal ant-menu-submenu-disabled" aria-hidden="true" role="none" data-submenu-id="sub_menu_1_$$_not_set_key" style="opacity: 0; height: 0px; overflow-y: hidden; order: 2147483647; pointer-events: none; position: absolute;"><div class="ant-menu-submenu-title" data-menu-id="sub_menu_1_$$_not_set_key" aria-expanded="false" aria-haspopup="true" aria-controls="sub_menu_1_$$_not_set_key-popup" aria-disabled="true"><span class="ant-menu-title-content"><span role="img" aria-label="ellipsis" class="anticon anticon-ellipsis"><svg focusable="false" class="" data-icon="ellipsis" width="1em" height="1em" fill="currentColor" aria-hidden="true" viewBox="64 64 896 896"><path d="M176 511a56 56 0 10112 0 56 56 0 10-112 0zm280 0a56 56 0 10112 0 56 56 0 10-112 0zm280 0a56 56 0 10112 0 56 56 0 10-112 0z"></path></svg></span></span><i class="ant-menu-submenu-arrow"></i></div><!----></li><!----></ul></div><div class="ant-col" align="right" style="flex: 1 1 auto;"><div><!----><button class="ant-btn ant-btn-background-ghost ant-dropdown-trigger" type="button"><!----><span role="img" aria-label="user" class="anticon anticon-user"><svg focusable="false" class="" data-icon="user" width="1em" height="1em" fill="currentColor" aria-hidden="true" viewBox="64 64 896 896"><path d="M858.5 763.6a374 374 0 00-80.6-119.5 375.63 375.63 0 00-119.5-80.6c-.4-.2-.8-.3-1.2-.5C719.5 518 760 444.7 760 362c0-137-111-248-248-248S264 225 264 362c0 82.7 40.5 156 102.8 201.1-.4.2-.8.3-1.2.5-44.8 18.9-85 46-119.5 80.6a375.63 375.63 0 00-80.6 119.5A371.7 371.7 0 00136 901.8a8 8 0 008 8.2h60c4.4 0 7.9-3.5 8-7.8 2-77.2 33-149.5 87.8-204.3 56.7-56.7 132-87.9 212.2-87.9s155.5 31.2 212.2 87.9C779 752.7 810 825 812 902.2c.1 4.4 3.6 7.8 8 7.8h60a8 8 0 008-8.2c-1-47.8-10.9-94.3-29.5-138.2zM512 534c-45.9 0-89.1-17.9-121.6-50.4S340 407.9 340 362c0-45.9 17.9-89.1 50.4-121.6S466.1 190 512 190s89.1 17.9 121.6 50.4S684 316.1 684 362c0 45.9-17.9 89.1-50.4 121.6S557.9 534 512 534z"></path></svg></span><span>20202132030</span><span role="img" aria-label="down" class="anticon anticon-down"><svg focusable="false" class="" data-icon="down" width="1em" height="1em" fill="currentColor" aria-hidden="true" viewBox="64 64 896 896"><path d="M884 256h-75c-5.1 0-9.9 2.5-12.9 6.6L512 654.2 227.9 262.6c-3-4.1-7.8-6.6-12.9-6.6h-75c-6.5 0-10.3 7.4-6.5 12.7l352.6 486.1c12.8 17.6 39 17.6 51.7 0l352.6-486.1c3.9-5.3.1-12.7-6.4-12.7z"></path></svg></span></button><!----><!----></div></div></div></header><main class="ant-layout-content"><div class="ant-breadcrumb" style="margin: 16px 0px;"><!----></div><div><div data-v-1c379d23=""><div class="ant-space ant-space-horizontal ant-space-align-center" data-v-1c379d23="" style="gap: 20px;"><div class="ant-space-item" style=""><div data-v-1c379d23="" style="background: rgb(255, 255, 255); padding: 24px; border-radius: 5px; overflow: hidden auto; height: 100%; position: relative;"><div data-v-1c379d23="" style="height: 310px; width: 300px; float: right;"><div class="ant-card ant-card-bordered" data-v-1c379d23="" style="height: 300px; width: 300px;"><div class="ant-card-head"><div class="ant-card-head-wrapper"><div class="ant-card-head-title">statistic</div><div class="ant-card-extra"><a data-v-1c379d23="">group filter</a></div></div><!----></div><!----><div class="ant-card-body" style="padding: 0px 24px;"><div data-v-1c379d23=""><div data-v-1c379d23="" style="height: 180px; margin-left: 20px;"><div id="chart" data-v-323ead02="" data-v-1c379d23="" _echarts_instance_="ec_1650618701368" style="height: 100%; user-select: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); position: relative;"><div style="position: relative; width: 230px; height: 180px; padding: 0px; margin: 0px; border-width: 0px; cursor: default;"><canvas data-zr-dom-id="zr_0" width="287" height="225" style="position: absolute; left: 0px; top: 0px; width: 230px; height: 180px; user-select: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; margin: 0px; border-width: 0px;"></canvas></div><div class="" style="position: absolute; display: block; border-style: solid; white-space: nowrap; z-index: 9999999; box-shadow: rgba(0, 0, 0, 0.2) 1px 2px 10px; transition: opacity 0.2s cubic-bezier(0.23, 1, 0.32, 1) 0s, visibility 0.2s cubic-bezier(0.23, 1, 0.32, 1) 0s, transform 0.4s cubic-bezier(0.23, 1, 0.32, 1) 0s; background-color: rgb(255, 255, 255); border-width: 1px; border-radius: 4px; color: rgb(102, 102, 102); font: 14px / 21px &quot;Microsoft YaHei&quot;; padding: 10px; top: 0px; left: 0px; transform: translate3d(79px, 63px, 0px); border-color: rgb(182, 162, 222); pointer-events: none; visibility: hidden; opacity: 0;">Wrong: 13 (19.7%)</div></div></div><div data-v-1c379d23="" style="margin-top: -10px; display: none;"><p data-v-1c379d23="">提交人数：66/0</p><p data-v-1c379d23=""> 总体正确率：Infinity% </p></div><p data-v-1c379d23="">提交人数：66</p></div></div><!----></div></div><button class="ant-btn ant-btn-primary" type="button" data-v-1c379d23=""><!----><span role="img" aria-label="rollback" class="anticon anticon-rollback" data-v-1c379d23=""><svg focusable="false" class="" data-icon="rollback" width="1em" height="1em" fill="currentColor" aria-hidden="true" viewBox="64 64 896 896"><path d="M793 242H366v-74c0-6.7-7.7-10.4-12.9-6.3l-142 112a8 8 0 000 12.6l142 112c5.2 4.1 12.9.4 12.9-6.3v-74h415v470H175c-4.4 0-8 3.6-8 8v60c0 4.4 3.6 8 8 8h618c35.3 0 64-28.7 64-64V306c0-35.3-28.7-64-64-64z"></path></svg></span><span>Back</span></button><article class="ant-typography" data-v-1c379d23=""><h1 class="ant-typography" data-v-1c379d23="">查询选课名单<!----></h1><h2 class="ant-typography" data-v-1c379d23="">Description<!----></h2><div class="ant-typography" data-v-1c379d23=""><p>查询选修了课程号为1025课程的所有学生学号与姓名，按学号升序排序。</p><p>（本专题依然使用专题一的<b>"选课管理数据库"中的三张表）</b><br></p><p><br><img src="" alt=""></p><p><img src="" alt=""></p><p><img src="" alt=""></p></div></article></div></div><!----><div class="ant-space-item"><div data-v-1c379d23="" style="background: rgb(255, 255, 255); padding: 24px; border-radius: 5px; width: 100%; height: 100%; overflow: hidden auto;"><form data-v-1c379d23="" style="background: rgb(255, 255, 255); padding: 24px; min-height: 280px; border-radius: 5px;"><div class="ant-row ant-form-item" data-v-1c379d23="" style="row-gap: 0px;"><!----><div class="ant-col ant-form-item-control"><div class="ant-form-item-control-input"><div class="ant-form-item-control-input-content"><div data-v-7e2d99a8="" data-v-1c379d23=""><textarea placeholder="code goes here..." data-v-7e2d99a8="" style="width: 100%; display: none;"></textarea><div class="CodeMirror cm-s-default CodeMirror-wrap CodeMirror-focused" translate="no"><div style="overflow: hidden; position: relative; width: 3px; height: 0px; top: 5px; left: 209px;"><textarea autocorrect="off" autocapitalize="off" spellcheck="false" tabindex="0" style="position: absolute; bottom: -1em; padding: 0px; width: 1000px; height: 1em; min-height: 1em; outline: none;"></textarea></div><div class="CodeMirror-vscrollbar" tabindex="-1" cm-not-content="true"><div style="min-width: 1px; height: 0px;"></div></div><div class="CodeMirror-hscrollbar" tabindex="-1" cm-not-content="true"><div style="height: 100%; min-height: 1px; width: 0px;"></div></div><div class="CodeMirror-scrollbar-filler" cm-not-content="true"></div><div class="CodeMirror-gutter-filler" cm-not-content="true"></div><div class="CodeMirror-scroll" tabindex="-1"><div class="CodeMirror-sizer" style="margin-left: 44px; margin-bottom: -16px; border-right-width: 34px; min-height: 39px; padding-right: 0px; padding-bottom: 0px;"><div style="position: relative; top: 0px;"><div class="CodeMirror-lines" role="presentation"><div role="presentation" style="position: relative; outline: none;"><div class="CodeMirror-measure"><span><span>​</span>x</span></div><div class="CodeMirror-measure"></div><div style="position: relative; z-index: 1;"></div><div class="CodeMirror-cursors" style="visibility: hidden;"><div class="CodeMirror-cursor" style="left: 164px; top: 0px; height: 31.425px;">&nbsp;</div></div><div class="CodeMirror-code" role="presentation"><div class="CodeMirror-activeline" style="position: relative;"><div class="CodeMirror-activeline-background CodeMirror-linebackground"></div><div class="CodeMirror-gutter-background CodeMirror-activeline-gutter" style="left: -44px; width: 44px;"></div><div class="CodeMirror-gutter-wrapper CodeMirror-activeline-gutter" aria-hidden="true" style="left: -44px;"><div class="CodeMirror-linenumber CodeMirror-gutter-elt" style="left: 0px; width: 21px;">1</div></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-keyword">select</span> 学号<span class="cm-punctuation">,</span>姓名</span></pre></div></div></div></div></div></div><div style="position: absolute; height: 34px; width: 1px; border-bottom: 0px solid transparent; top: 39px;"></div><div class="CodeMirror-gutters" style="height: 73px;"><div class="CodeMirror-gutter CodeMirror-linenumbers" style="width: 29px;"></div><div class="CodeMirror-gutter CodeMirror-foldgutter"></div><div class="CodeMirror-gutter CodeMirror-lint-markers"></div></div></div></div></div></div><!----></div><!----><!----></div></div><div class="ant-row ant-form-item" data-v-1c379d23="" style="row-gap: 0px;"><!----><div class="ant-col ant-form-item-control"><div class="ant-form-item-control-input"><div class="ant-form-item-control-input-content"><button class="ant-btn ant-btn-primary" type="button" data-v-1c379d23="" style="float: right;"><!----><span>Submit</span></button></div><!----></div><!----><!----></div></div></form><div data-v-1c379d23="" style="display: none;"><div class="ant-table-wrapper"><div class="ant-spin-nested-loading"><!----><div class="ant-spin-container"><div class="ant-table ant-table-default ant-table-empty ant-table-scroll-position-left"><!----><div class="ant-table-content"><!----><div class="ant-table-body"><table class=""><colgroup><col data-key="submission_id"><col data-key="user_id"><col data-key="problem_id"><col data-key="module_id"><col data-key="status"><col data-key="time_cost"><col data-key="submit_time"></colgroup><thead class="ant-table-thead"><tr><th colstart="0" colspan="1" colend="0" rowspan="1" class=""><span class="ant-table-header-column"><div><span class="ant-table-column-title">submission</span><span class="ant-table-column-sorter"><!----></span></div></span><!----></th><th colstart="1" colspan="1" colend="1" rowspan="1" class=""><span class="ant-table-header-column"><div><span class="ant-table-column-title">user</span><span class="ant-table-column-sorter"><!----></span></div></span><!----></th><th colstart="2" colspan="1" colend="2" rowspan="1" class=""><span class="ant-table-header-column"><div><span class="ant-table-column-title">problem</span><span class="ant-table-column-sorter"><!----></span></div></span><!----></th><th colstart="3" colspan="1" colend="3" rowspan="1" class=""><span class="ant-table-header-column"><div><span class="ant-table-column-title">module</span><span class="ant-table-column-sorter"><!----></span></div></span><!----></th><th colstart="4" colspan="1" colend="4" rowspan="1" class=""><span class="ant-table-header-column"><div><span class="ant-table-column-title">status</span><span class="ant-table-column-sorter"><!----></span></div></span><!----></th><th colstart="5" colspan="1" colend="5" rowspan="1" class=""><span class="ant-table-header-column"><div><span class="ant-table-column-title">time</span><span class="ant-table-column-sorter"><!----></span></div></span><!----></th><th colstart="6" colspan="1" colend="6" rowspan="1" class=""><span class="ant-table-header-column"><div><span class="ant-table-column-title">when</span><span class="ant-table-column-sorter"><!----></span></div></span><!----></th></tr></thead><tbody class="ant-table-tbody"></tbody></table></div><div class="ant-table-placeholder"><div class="ant-empty ant-empty-normal"><div class="ant-empty-image"><svg class="ant-empty-img-simple" width="64" height="41" viewBox="0 0 64 41"><g transform="translate(0 1)" fill="none" fill-rule="evenodd"><ellipse class="ant-empty-img-simple-ellipse" fill="#F5F5F5" cx="32" cy="33" rx="32" ry="7"></ellipse><g class="ant-empty-img-simple-g" fill-rule="nonzero" stroke="#D9D9D9"><path d="M55 12.76L44.854 1.258C44.367.474 43.656 0 42.907 0H21.093c-.749 0-1.46.474-1.947 1.257L9 12.761V22h46v-9.24z"></path><path d="M41.613 15.931c0-1.605.994-2.93 2.227-2.931H55v18.137C55 33.26 53.68 35 52.05 35h-40.1C10.32 35 9 33.259 9 31.137V13h11.16c1.233 0 2.227 1.323 2.227 2.928v.022c0 1.605 1.005 2.901 2.237 2.901h14.752c1.232 0 2.237-1.308 2.237-2.913v-.007z" fill="#FAFAFA" class="ant-empty-img-simple-path"></path></g></g></svg></div><p class="ant-empty-description">No Data</p><!----></div></div><!----></div></div></div></div></div></div></div></div><!----></div></div></div></main><footer class="ant-layout-footer" style="text-align: center;"><!----></footer></section></div><script src="./SQL OJ_files/chunk-vendors.8aa44ccb.js.下载"></script><script src="./SQL OJ_files/app.58329bf9.js.下载"></script><div style="position: absolute; top: 0px; left: 0px; width: 100%;"><div><!----><div class="ant-menu-submenu  ant-menu-submenu-popup ant-menu ant-menu-dark ant-menu-submenu-placement-bottomLeft" style="display: none;"><ul id="sub_menu_1_$$_not_set_key-popup" class="ant-menu ant-menu-sub ant-menu-vertical" data-menu-list="true" style="display: none;"><!----></ul></div></div></div><div class="xl-chrome-ext-bar" id="xl_chrome_ext_{4DB361DE-01F7-4376-B494-639E489D19ED}" style="display: none;">
      <div class="xl-chrome-ext-bar__logo"></div>

      <a id="xl_chrome_ext_download" href="javascript:;" class="xl-chrome-ext-bar__option">下载视频</a>
      <a id="xl_chrome_ext_close" href="javascript:;" class="xl-chrome-ext-bar__close"></a>
    </div><div style="position: absolute; top: 0px; left: 0px; width: 100%;"><div><!----><div class="ant-popover ant-popover-placement-top" style="left: 782px; top: 78px; display: none;"><div class="ant-popover-content"><div class="ant-popover-arrow"><span class="ant-popover-arrow-content"></span></div><div class="ant-popover-inner" role="tooltip"><div><!----><div class="ant-popover-inner-content"><input placeholder="enter group id" type="text" class="ant-input" data-v-1c379d23=""></div></div></div></div></div></div></div></body></html>